Over 10,000 creature specimens, scanned in slices that can be re-assembled to make 3D objects that show internal organs and skeletons etc. You have to know the scientific name of the animal, though, and even then there can be zero results (e.g. cats > felidae, or cats > felis catus). However, if you strike lucky (tarentola mauritanica > wall gecko) you can download, after registration. Even then, you get a TIFF stack, rather than an .OBJ. Still, the resource may be a help to those who want to create Poser/ Daz creatures.
